Maruo Calcium by the Numbers

Foundation

1926 year

Established in 1926
Maruo Calcium was founded in 1926 (Taisho 15). With more than 80 years of history behind us, we have continued to pioneer niche markets from a global perspective, guided by our catchword “Creation and Challenge.” Throughout the decades, our reliable technical expertise has consistently delivered high-quality calcium carbonate to customers.

Number of Employees

※As of the end of March 2026

239

As a small to medium-sized enterprise, we believe in the power of a select, talented team, and we work thoughtfully each day toward further growth.

Gender Ratio

8 Female 2 Male

While male employees still make up the majority, the number of women joining our company has been steadily increasing in recent years.

R&D Investment

300 million yen

Maruo Calcium invests approximately ¥300 million in research and development every year. At our Central Research Laboratory, located next to our Akashi Head Office, we conduct R&D on inorganic materials with a focus on calcium carbonate. Beyond developing new products, we also explore innovative new applications for our materials.

Net Sales

Fiscal year ended March 2026